Waec Model Questions Vol1 2025 Chemistry Question 9
Practice objective / multiple choice question 9 from the 2025 Waec Model Questions Vol1 Chemistry examination.
A 100 mL equimolar mixture of the four C₄H₁₀O isomers (n‑butanol, sec‑butanol, isobutanol, tert‑butanol) is subjected to fractional distillation. The boiling points are: n‑butanol 117.7 °C, sec‑butanol 99.5 °C, isobutanol 108 °C, tert‑butanol 82 °C. The temperature of the vapor phase when the first 25 % of the distillate (by volume) is collected is 105 °C. Which isomer(s) are present in that first fraction?
Answer Options
About This Question
This is Waec Model Questions Vol1 2025 Chemistry Question 9. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.